How to call Javascript function from activex or dll

Question

I found the similar questions how to call java script function from activex or dll in c# but this is not provide me solution.than i continue my searching finally i got msdn link on this

http://msdn.microsoft.com/en-us/library/ms171712.aspx

To access DOM from a UserControl hosted in Internet Explorer

Create your own custom derived class of the UserControl class. For more information, see How to: Author Composite Controls.

Place the following code inside of your Load event handler for your UserControl:

    HtmlDocument doc = null;

    private void UserControl1_Load(object sender, EventArgs e)
    {
        if (this.Site != null)
        {
            doc = (HtmlDocument)this.Site.GetService(typeof(HtmlDocument));
        }
    }

Unfortunately I am still unable to get DOM object in my class.I have try to see what i get in this.Site so i put it on a messagebox

   MessageBox.Show(this.Site.ToString());

which shows me strange thing that is

System.Windows.Forms.Control+AxSourcingSite

please help me..

Answer 1

Here is a example to call js function from active x:

Type typeIOleObject = "activity control object".GetType().GetInterface("IOleObject", true);  
            object oleClientSite = typeIOleObject.InvokeMember("GetClientSite",  
            BindingFlags.Instance | BindingFlags.InvokeMethod | BindingFlags.Public,  
            null,  
            control,  
            null);  

            IOleClientSite oleClientSiteoleClientSite2 = oleClientSite as IOleClientSite;  
            IOleContainer pObj;  
            oleClientSite2.GetContainer(out pObj);  

            //get Script set from page  
            IHTMLDocument2 pDoc2 = (IHTMLDocument2)pObj;  
            IHTMLWindow2 win2 = (IHTMLWindow2)pDoc2.parentWindow;  
             //string code="";
            win2.execScript(code, "javascript");  
            if (returnType == null)  
      [ComImport, Guid("00000118-0000-0000-C000-000000000046"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]  
    public interface IOleClientSite  
    {  
        void SaveObject();  
        void GetMoniker(uint dwAssign, uint dwWhichMoniker, object ppmk);  
        void GetContainer(out IOleContainer ppContainer);  
        void ShowObject();  
        void OnShowWindow(bool fShow);  
        void RequestNewObjectLayout();  
    }  
      [ComImport, Guid("0000011B-0000-0000-C000-000000000046"), InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]  
    public interface IOleContainer  
    {  
        void EnumObjects([In, MarshalAs(UnmanagedType.U4)] int grfFlags,  
        [Out, MarshalAs(UnmanagedType.LPArray)] object[] ppenum);  
        void ParseDisplayName([In, MarshalAs(UnmanagedType.Interface)] object pbc,  
        [In, MarshalAs(UnmanagedType.BStr)] string pszDisplayName,  
        [Out, MarshalAs(UnmanagedType.LPArray)] int[] pchEaten,  
        [Out, MarshalAs(UnmanagedType.LPArray)] object[] ppmkOut);  
        void LockContainer([In, MarshalAs(UnmanagedType.I4)] int fLock);  
    }